ONEWE and ONEUS are finally making their debut as the first boy bands from RBW after undergoing their one-year debut project 'I Shall Debut', which is also the title of their first digital single album. 

ONEWE is a five-person group composed of Yonghoon, Ganghyun, Harin, Dongmyung and Kia, who fans might recognize from 'The Unit'. ONEUS is a six-person band consisting of Gunhee, Hwanwoong, Seoho, Raven, Ido, and Sion, who viewers saw on 'Produce 101' and 'Mix Nine'. 

Check out ONEWE x ONEUS' "Last Song" MV above, and let us know what you think in the comments below!